This paper describes procedures and results of numerical simulations of 3 test cases in the framework of the IRIS-2010 project under OECD/NEA IAGE working group. The first numerical analysis was performed on the MEPPEN test II-4, which was conducted at the end of the seventies in Germany. Two other numerical analyses were done on the VTT tests, which were conducted for two kinds of failure mode, bending and punching, in 2010 at VTT research center in Finland. Three impact simulations were performed using explicit FEM code LS-DYNA. The CSCM concrete model was applied and the strain-rate effects of materials, such as concrete, rebar and missile steel, were considered for the analysis. The erosion of element was also allowed. The simulation results were compared with the test results in the aspect of behavior of missile and concrete plate such as missile deformation, concrete plate displacement, concrete damage characteristics, etc.
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